/** Returns the original argument types. */
private String originalArguments(String obfuscatedArguments) {
StringBuffer originalArguments = new StringBuffer();
int startIndex = 0;
while (true) {
int endIndex = obfuscatedArguments.indexOf(',', startIndex);
if (endIndex < 0) {
break;
}
originalArguments
.append(originalType(obfuscatedArguments.substring(startIndex, endIndex).trim()))
.append(',');
startIndex = endIndex + 1;
}
originalArguments.append(originalType(obfuscatedArguments.substring(startIndex).trim()));
return originalArguments.toString();
}
/** Performs the subsequent ReTrace operations. */
public void execute() throws IOException {
// Read the mapping file.
MappingReader mappingReader = new MappingReader(mappingFile);
mappingReader.pump(this);
StringBuffer expressionBuffer = new StringBuffer(regularExpression.length() + 32);
char[] expressionTypes = new char[32];
int expressionTypeCount = 0;
int index = 0;
while (true) {
int nextIndex = regularExpression.indexOf('%', index);
if (nextIndex < 0
|| nextIndex == regularExpression.length() - 1
|| expressionTypeCount == expressionTypes.length) {
break;
}
expressionBuffer.append(regularExpression.substring(index, nextIndex));
expressionBuffer.append('(');
char expressionType = regularExpression.charAt(nextIndex + 1);
switch (expressionType) {
case 'c':
expressionBuffer.append(REGEX_CLASS);
break;
case 'C':
expressionBuffer.append(REGEX_CLASS_SLASH);
break;
case 'l':
expressionBuffer.append(REGEX_LINE_NUMBER);
break;
case 't':
expressionBuffer.append(REGEX_TYPE);
break;
case 'f':
expressionBuffer.append(REGEX_MEMBER);
break;
case 'm':
expressionBuffer.append(REGEX_MEMBER);
break;
case 'a':
expressionBuffer.append(REGEX_ARGUMENTS);
break;
}
expressionBuffer.append(')');
expressionTypes[expressionTypeCount++] = expressionType;
index = nextIndex + 2;
}
expressionBuffer.append(regularExpression.substring(index));
Pattern pattern = Pattern.compile(expressionBuffer.toString());
// Read the stack trace file.
LineNumberReader reader =
new LineNumberReader(
stackTraceFile == null
? (Reader) new InputStreamReader(System.in)
: (Reader) new BufferedReader(new FileReader(stackTraceFile)));
try {
StringBuffer outLine = new StringBuffer(256);
List extraOutLines = new ArrayList();
String className = null;
// Read the line in the stack trace.
while (true) {
String line = reader.readLine();
if (line == null) {
break;
}
Matcher matcher = pattern.matcher(line);
if (matcher.matches()) {
int lineNumber = 0;
String type = null;
String arguments = null;
// Figure out a class name, line number, type, and
// arguments beforehand.
for (int expressionTypeIndex = 0;
expressionTypeIndex < expressionTypeCount;
expressionTypeIndex++) {
int startIndex = matcher.start(expressionTypeIndex + 1);
if (startIndex >= 0) {
String match = matcher.group(expressionTypeIndex + 1);
char expressionType = expressionTypes[expressionTypeIndex];
switch (expressionType) {
case 'c':
className = originalClassName(match);
break;
case 'C':
className = originalClassName(ClassUtil.externalClassName(match));
break;
case 'l':
lineNumber = Integer.parseInt(match);
break;
case 't':
type = originalType(match);
break;
case 'a':
arguments = originalArguments(match);
break;
}
}
}
// Actually construct the output line.
int lineIndex = 0;
outLine.setLength(0);
extraOutLines.clear();
for (int expressionTypeIndex = 0;
expressionTypeIndex < expressionTypeCount;
expressionTypeIndex++) {
int startIndex = matcher.start(expressionTypeIndex + 1);
if (startIndex >= 0) {
int endIndex = matcher.end(expressionTypeIndex + 1);
String match = matcher.group(expressionTypeIndex + 1);
// Copy a literal piece of input line.
outLine.append(line.substring(lineIndex, startIndex));
char expressionType = expressionTypes[expressionTypeIndex];
switch (expressionType) {
case 'c':
className = originalClassName(match);
outLine.append(className);
break;
case 'C':
className = originalClassName(ClassUtil.externalClassName(match));
outLine.append(ClassUtil.internalClassName(className));
break;
case 'l':
lineNumber = Integer.parseInt(match);
outLine.append(match);
break;
case 't':
type = originalType(match);
outLine.append(type);
break;
case 'f':
originalFieldName(className, match, type, outLine, extraOutLines);
break;
case 'm':
originalMethodName(
className, match, lineNumber, type, arguments, outLine, extraOutLines);
break;
case 'a':
arguments = originalArguments(match);
outLine.append(arguments);
break;
}
// Skip the original element whose processed version
// has just been appended.
lineIndex = endIndex;
}
}
// Copy the last literal piece of input line.
outLine.append(line.substring(lineIndex));
// Print out the main line.
System.out.println(outLine);
// Print out any additional lines.
for (int extraLineIndex = 0; extraLineIndex < extraOutLines.size(); extraLineIndex++) {
System.out.println(extraOutLines.get(extraLineIndex));
}
} else {
// Print out the original line.
System.out.println(line);
}
}
} catch (IOException ex) {
throw new IOException("Can't read stack trace (" + ex.getMessage() + ")");
} finally {
if (stackTraceFile != null) {
try {
reader.close();
} catch (IOException ex) {
// This shouldn't happen.
}
}
}
}